Jun Steel Frames & Trusses / Jun Project Group
Jun Steel Frames & Trusses / Jun Project Group
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  • Windows
  • Window Enquiry
  • Windows Q&A

Frequently Asked Questions

Please reach us at info@jungroup.com.au if you cannot find an answer to your question.

 Yes. Custom windows are built to match the exact dimensions of your opening, which reduces installation gaps, improves airtightness, and enhances energy performance. They also allow you to choose frame thickness, glass types, hardware, and finishes that standard windows cannot offer. For non-standard openings or modern architectural designs, custom windows typically perform noticeably better. 


 Pricing varies by several factors:

Size (large spans cost more)

Glazing (triple glazing is more expensive than double glazing)

Aluminum thickness (1.5–2.2 mm performance levels)

Surface finish (PVDF is higher grade than powder coating)

Hardware grade (German hardware increases cost)

We provides itemized quotations based on your configuration so you can compare options clearly.


 Typical manufacturing time is 2–4 weeks and additional time for shipping

Additional time is needed for:

Triple-glazed units

Oversized picture windows

Corner or multi-panel combinations

Special shapes such as hexagonal windows

Production timelines are confirmed after engineering review so project scheduling is predictable.


 Windows come with a 10-year warranty, covering:

Aluminum frames

Thermal breaks

Insulated glass units

Hardware components

The warranty applies to structural defects, seal failure, hardware malfunction, or abnormal material degradation under normal use.


 We offer full customization across all window types:

Sizes & shapes (standard, oversized, corner, asymmetric, special shapes)

Frame thickness (1.5 / 1.8 / 2.0 / 2.2 mm)

Colors & finishes (neutrals, dark tones, coffee colors, woodgrains, PVDF, anodizing)

Glass types (tempered, laminated, Low-E, double/triple insulated, tinted, reflective)

Opening configurations (casement, picture, sliding, multi-panel, side-vented)

Hardware systems (hinges, locks, handles, pulleys, security points)

Performance grades for wind load, airtightness, and energy efficiency

This allows our windows to match both residential and commercial project requirements.


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